Which formula represents the moment of force?

Prepare for your 4th Class Power Engineering Part A Exam. Study with multiple choice quizzes and detailed explanations. Excel in your exam!

The moment of force, commonly referred to as torque, is calculated using the formula that involves multiplying force by the distance from the point of rotation to the line of action of the force. This is represented as Force (N) x Distance (m), where the force is measured in Newtons and the distance in meters. The product gives the moment of force in Newton-meters (Nm).

This relationship is fundamental in mechanics, as it quantifies the rotational influence that a force exerts on an object about a pivot point. The further away the force is applied from the pivot point, or the greater the force applied, the larger the moment of force, which means that it is easier to rotate the object.

The other options represent different concepts that are not directly related to the moment of force. For example, dividing load by effort pertains to mechanical advantage or efficiency, while the relationship of the distance moved by effort to that moved by load addresses concepts of levers or mechanical systems in terms of work input and output, but does not calculate moment of force.

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